Sulphur output and magma degassing budget of Stromboli volcano

Allard, P.; Carbonnelle, J.; Métrich, Nicole; Loyer, Henri; Zettwoog, P.

doi:10.1038/368326a0

Cited by 324 publications

(247 citation statements)

References 24 publications

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“…There are also direct records of a continuous exogenous flux of magma [11], coupled with time integrated volumetric calculations [8] of the material partially filling the Sciara del Fuoco scar. The open conduit system provides evidence for steady state conditions in the magmatic reservoir underneath the volcano (e.g., [6,7,19]). There is no information, however, on critical parameters, such as the size of the reservoir and the average time magma spends in the chamber (residence time, − ).…”

Section: Discussionmentioning

confidence: 99%

“…In the case study of Stromboli volcano, there are indirect estimates of a continuous input flux of fresh magma into the system based upon SO 2 [7] and heat [6,9] fluxes. There are also direct records of a continuous exogenous flux of magma [11], coupled with time integrated volumetric calculations [8] of the material partially filling the Sciara del Fuoco scar.…”

Section: Discussionmentioning

confidence: 99%

“…The volcano has been in steady-state for the last 2000 years, with activity related to an open conduit system (e.g., [6,7,19]), and the magma commonly visible inside the vents. The present day activity is moderately explosive and persistently erupts bombs, black scoriae, lapilli and ash (ca.…”

Section: Volcanological Backgroundmentioning

confidence: 99%

“…Here we present an Sr isotope survey of scoriae and lavas erupted from the Stromboli volcano during this century. The time series analysis applied to conservative geochemical tracers, such as Sr isotopes, potentially allows assessment of magma residence time and, in combination with output and input magma fluxes (e.g., [6][7][8][9]), determi-0012-821X/99/$ -see front matter © 1999 Elsevier Science B.V. All rights reserved. PII: S 0 0 1 2 -8 2 1 X ( 9 9 ) 0 0 0 1 3 -8 nation of the dynamics of the entire volcanic system at Stromboli.…”

Section: Introductionmentioning

confidence: 99%

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Sr isotope evidence for short magma residence time for the 20th century activity at Stromboli volcano, Italy

Francalanci

Tommasini

Conticelli

et al. 1999

Earth and Planetary Science Letters

108

109

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Stromboli is the type locality of continuous and moderately explosive volcanic activity. Monitoring temporal variations in the composition of the material erupted allows constraints to be made on the magma chamber dynamics and volcanic hazard. Here we present an Sr isotope survey of scoriae and lavas erupted from Stromboli volcano during this century. The material erupted is transitional between shoshonite and High-K basalt, with relatively constant major and trace element composition. This implies no substantial physical separation of minerals during crystallization (ca. 50 vol% minerals in both lavas and scoriae) and hence a relatively homogeneous reservoir. 87 Sr= 86 Sr values are constant from 1900 to ca. 1980, then, beginning prior to the major lava flow eruption of December 1985, there is a smooth decrease. The Sr isotope decrease records the arrival of a new feeding magma, and allows estimation of the magma residence time and the volume of the reservoir beneath Stromboli volcano. Our results, along with a critical assessment of magma flux estimates, are best reconciled with steady state conditions, and establish the existence of a relatively small, ¾0.3 to 0.04 km 3 , reservoir with a magma residence time .− / of ca. 19 years. Monitoring the temporal variation of isotopic ratios in active volcanoes appears a successful tool in forecasting some major volcanic eruptions.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Volcanological Backgroundmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sr isotope evidence for short magma residence time for the 20th century activity at Stromboli volcano, Italy

Francalanci

Tommasini

Conticelli

et al. 1999

Earth and Planetary Science Letters

108

109

View full text Add to dashboard Cite

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“…The presence of excessive volatiles in felsic magmas is well documented in studies of recent volcanic eruptions (e.g., Luhr et al, 1984;Anderson et al, 1989;Andres et al, 1991;Westrich and Gerlach, 1992;Williams et al, 1992;Hattori, 1993;Allard et al, 1994;Gerlach et al, 1994;Wallace and Gerlach, 1994). However, quantitative constraints on the metal supply associated with fluid fluxes from mafic magmas, and metal deposition associated with felsic magmas, are required.…”

Section: Metals In Fluid Fluxes From Basaltic Magmasmentioning

confidence: 99%

Fluid bubbles in melt inclusions and pillow-rim glasses: high-temperature precursors to hydrothermal fluids?

et al. 2002

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Hypotheses for the formation of many types of hydrothermal ore deposits often involve the direct contribution of magmarelated fluids (e.g., Cu -Mo -Au porphyries) or their superimposition on barren hydrothermal cells (e.g., volcanic-hosted massive sulfide deposits). However, the chemical and phase compositions of such fluids remain largely unknown. We report preliminary results of a comprehensive study of fluid bubbles trapped inside glassy melt inclusions in primitive olivine phenocrysts and pillow-rim glasses from basaltic magmas from different tectonic environments, including mid-ocean ridges (Macquarie Island, SW Pacific and Mid-Atlantic Ridge 43°N Fracture Zone), ocean islands (Hawaii) and a variety of modern and ancient backarc -island arc settings (eastern Manus Basin, Okinawa and Vanuatu Troughs, Troodos, New Caledonia and Hunter Ridge -Hunter Fracture Zone). Fluid bubbles from all localities, studied using electron microscopy with EDS and laser Raman spectroscopy, are composed of CO 2 -( ± H 2 O ± sulfur)-bearing vapor and contain significant amounts of amorphous (Na -K -Ca -Fe alumino-silicates and dissorded carbon) and crystalline phases. The crystals are represented mainly by carbonates (magnesite, calcite, ankerite, dolomite, siderite, nahcolite and rhodochrosite), sulfates (anhydrite, gypsum, barite and anglesite), and sulfides (pyrite, arsenopyrite, chalcopyrite and marcasite), though other minerals (brukite, apatite, halite, clinoenstatite, kalsilite, nepheline, amphibole and mica) may occur as well. We argue that chemical components (e.g., C, H, S, Cl, Si, Al, Na, K, Fe, Mn, Cr, Ca, Mg, Ba, Pb and Cu) that later formed precipitates in fluid bubbles were originally dissolved in the magmatic fluid, and were not supplied by host glasses or phenocrysts after entrapment. Magma-related fluid rich in dissolved metals and other non-volatile elements may be a potential precursor to ore-forming solutions. D

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Active alkaline traps to determine acidic‐gas ratios in volcanic plumes: Sampling techniques and analytical methods

Wittmer

Bobrowski

Liotta

et al. 2014

Geochem Geophys Geosyst

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In situ measurements have been the basis for monitoring volcanic gas emissions for many years and-being complemented by remote sensing techniques-still play an important role to date. Concerning in situ techniques for sampling a dilute plume, an increase in accuracy and a reduction of detection limits are still necessary for most gases (e.g., CO 2 , SO 2 , HCl, HF, HBr, HI). In this work, the Raschig-Tube technique (RT) is modified and utilized for application on volcanic plumes. The theoretical and experimental absorption properties of the RT and the Drechsel bottle (DB) setups are characterized and both are applied simultaneously to the well-established Filter packs technique (FP) in the field (on Stromboli Island and Mount Etna). The comparison points out that FPs are the most practical to apply but the results are errorprone compared to RT and DB, whereas the RT results in up to 13 times higher analyte concentrations than the DB in the same sampling time. An optimization of the analytical procedure, including sample pretreatment and analysis by titration, Ion Chromatography, and Inductively Coupled Plasma Mass Spectrometry, led to a comprehensive data set covering a wide range of compounds. In particular, less abundant species were quantified more accurately and iodine was detected for the first time in Stromboli's plume. Simultaneously applying Multiaxis Differential Optical Absorption Spectroscopy (MAX-DOAS) the chemical transformation of emitted bromide into bromine monoxide (BrO) from Stromboli and Etna was determined to 3-6% and 7%, respectively, within less than 5 min after the gas release from the active vents.

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Sulphur output and magma degassing budget of Stromboli volcano

Cited by 324 publications

References 24 publications

Sr isotope evidence for short magma residence time for the 20th century activity at Stromboli volcano, Italy

Sr isotope evidence for short magma residence time for the 20th century activity at Stromboli volcano, Italy

Fluid bubbles in melt inclusions and pillow-rim glasses: high-temperature precursors to hydrothermal fluids?

Active alkaline traps to determine acidic‐gas ratios in volcanic plumes: Sampling techniques and analytical methods

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